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taurus [48]
3 years ago
7

The boiling point (at atmospheric pressure) of Ammonia is -28 1/10°F and of Propylene is -53 9/10°F. What is the difference in t

heir boiling points?
-82°F

26°F

25 4/5°F

-81 4/5°F
Mathematics
1 answer:
Kay [80]3 years ago
3 0
I think it's 25 4/5 F
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Rene is going to the lake to visit some friends if the lake is 60 miles away, and rene is driving a 40 miles per hour the entire
Ostrovityanka [42]
40/60=60/x...forty miles in sixty minutes is equal to 60 miles in 40 minutes.....40x=3600....x=90..90 minutes
4 0
3 years ago
The function h(t) = -16t2 + 48t + 28 models the height (in feet) of a ball where t is the time (in seconds).
Alex17521 [72]

Answer:

64

Step-by-step explanation:

<em>[using calculus] </em>When the function h(t) reaches its maximum value, its first derivative will be equal to zero (the first derivative represents velocity of the ball, which is instantaneously zero). We have h'(t) = -32t + 48, which equals zero when t = 3/2 = 1.5. The ball therefore reaches its maximum height when t = 1.5. To find the maximum height, we need to find h(1.5), which is 64 feet.

<em>[without calculus] </em>This is a quadratic function, so its maximum value will occur at its vertex. The formula for the x-coordinate of the vertex is -b/2a, so the maximum value occurs when t = -48/(2*16), which is 1.5. The maximum height is h(1.5), which is 64 feet.

5 0
3 years ago
Slope 8 ​; through ​(4​,3​)
Reptile [31]

Answer:

y=8x-29

Step-by-step explanation:

Since we know the slope (m) is 8, we can plug it in the slope-intercept formula y=mx+b, making y=8x+b.

Now we need to find the y-intercept (b). To do that, you would need to plug in the points given to you, which were (4,3).

x=4, y=3... so 3=8(4)+b

Now you can solve for the variable b to find the y-intercept.

3=8(4)+b, multiply...

3=32+b, subtract 32 on both sides...

-29=b

Therefore, the y-intercept, or b, is -29.

The equation would be y=8x-29

7 0
3 years ago
Answer and solution in 2xy-5yz-4x+10z
xxTIMURxx [149]

Answer:

2xy+10z-5yz-4x

Step-by-step explanation:

Just put the positives and negatives together. You can't add or subtract any of them because they aren't like terms.

5 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
sveta [45]
I think the answer is B.
Hope this helps.

4 0
3 years ago
Read 2 more answers
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